1 //===-- ARMAsmPrinter.h - ARM implementation of AsmPrinter ------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #ifndef ARMASMPRINTER_H
11 #define ARMASMPRINTER_H
14 #include "ARMTargetMachine.h"
15 #include "llvm/CodeGen/AsmPrinter.h"
16 #include "llvm/Support/Compiler.h"
29 class LLVM_LIBRARY_VISIBILITY ARMAsmPrinter : public AsmPrinter {
31 /// Subtarget - Keep a pointer to the ARMSubtarget around so that we can
32 /// make the right decision when printing asm code for different targets.
33 const ARMSubtarget *Subtarget;
35 /// AFI - Keep a pointer to ARMFunctionInfo for the current
39 /// MCP - Keep a pointer to constantpool entries of the current
41 const MachineConstantPool *MCP;
43 /// InConstantPool - Maintain state when emitting a sequence of constant
44 /// pool entries so we can properly mark them as data regions.
47 explicit ARMAsmPrinter(TargetMachine &TM, MCStreamer &Streamer)
48 : AsmPrinter(TM, Streamer), AFI(NULL), MCP(NULL), InConstantPool(false) {
49 Subtarget = &TM.getSubtarget<ARMSubtarget>();
52 const char *getPassName() const override {
53 return "ARM Assembly / Object Emitter";
56 void printOperand(const MachineInstr *MI, int OpNum, raw_ostream &O,
57 const char *Modifier = 0);
59 bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNum,
60 unsigned AsmVariant, const char *ExtraCode,
61 raw_ostream &O) override;
62 bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNum,
63 unsigned AsmVariant, const char *ExtraCode,
64 raw_ostream &O) override;
66 void emitInlineAsmEnd(const MCSubtargetInfo &StartInfo,
67 const MCSubtargetInfo *EndInfo) const override;
69 void EmitJumpTable(const MachineInstr *MI);
70 void EmitJump2Table(const MachineInstr *MI);
71 void EmitInstruction(const MachineInstr *MI) override;
72 bool runOnMachineFunction(MachineFunction &F) override;
74 void EmitConstantPool() override {
75 // we emit constant pools customly!
77 void EmitFunctionBodyEnd() override;
78 void EmitFunctionEntryLabel() override;
79 void EmitStartOfAsmFile(Module &M) override;
80 void EmitEndOfAsmFile(Module &M) override;
81 void EmitXXStructor(const Constant *CV) override;
83 // lowerOperand - Convert a MachineOperand into the equivalent MCOperand.
84 bool lowerOperand(const MachineOperand &MO, MCOperand &MCOp);
87 // Helpers for EmitStartOfAsmFile() and EmitEndOfAsmFile()
88 void emitAttributes();
90 // Generic helper used to emit e.g. ARMv5 mul pseudos
91 void EmitPatchedInstruction(const MachineInstr *MI, unsigned TargetOpc);
93 void EmitUnwindingInstruction(const MachineInstr *MI);
95 // emitPseudoExpansionLowering - tblgen'erated.
96 bool emitPseudoExpansionLowering(MCStreamer &OutStreamer,
97 const MachineInstr *MI);
100 unsigned getISAEncoding() override {
101 // ARM/Darwin adds ISA to the DWARF info for each function.
102 if (!Subtarget->isTargetMachO())
104 return Subtarget->isThumb() ?
105 ARM::DW_ISA_ARM_thumb : ARM::DW_ISA_ARM_arm;
109 MCOperand GetSymbolRef(const MachineOperand &MO, const MCSymbol *Symbol);
110 MCSymbol *GetARMJTIPICJumpTableLabel2(unsigned uid, unsigned uid2) const;
112 MCSymbol *GetARMSJLJEHLabel() const;
114 MCSymbol *GetARMGVSymbol(const GlobalValue *GV, unsigned char TargetFlags);
117 /// EmitMachineConstantPoolValue - Print a machine constantpool value to
119 void EmitMachineConstantPoolValue(MachineConstantPoolValue *MCPV) override;
121 } // end namespace llvm